EP 1260937 A2 20021127 - Touch panel device
Title (en)
Touch panel device
Title (de)
Berührungsempfindliche Tafel
Title (fr)
Ecran tactile
Publication
Application
Priority
JP 2001145481 A 20010515
Abstract (en)
A surface acoustic wave is excited from an excitation element (2,32) disposed on a substrate (1,31), the surface acoustic wave propagated on the substrate is received by a receiving element (3,33) positioned on the substrate so as to face the excitation element, and the position of an object touching the substrate is detected based on the reception result. The wave number of a burst wave applied to excite the excitation element (2,32) is made equal to the number of the comb-like electrode fingers of an inter digital transducer of the excitation element, thereby achieving highly accurate detection and high time resolution. <IMAGE>
IPC 1-7
IPC 8 full level
G06F 3/033 (2006.01); G06F 3/041 (2006.01); G06F 3/043 (2006.01); H03K 17/96 (2006.01)
CPC (source: EP US)
G06F 3/0436 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 1260937 A2 20021127; EP 1260937 A3 20031001; EP 1260937 B1 20050216; DE 60108945 D1 20050324; DE 60108945 T2 20051229; JP 2002342032 A 20021129; JP 3862516 B2 20061227; US 2002171635 A1 20021121; US 6750853 B2 20040615
DOCDB simple family (application)
EP 01308150 A 20010925; DE 60108945 T 20010925; JP 2001145481 A 20010515; US 96095701 A 20010925